HIGH QUALITY MATERIAL: Make of quality ABS material. environment friendly and non-toxic. make you have a better life. EASY TO USE: the white panel can be freely detached, very convenient to clean and maintain. EASY TO INSTALLATION: available for wall mounted or ceiling mounted. make easy to install in home or other inside/outside places. SIDE: Diameter of 5 Inch, stylish design, ideal for room exhaust and ventilation use. WHAT YOU GET: The HG POWER air vents has modern design and good looking. We have worriless 12-month and friendly customer service.If there exist any problems, please feel free to contact us. we will reply immediately in 24 hours. Specification: size: 5 inch; material: high quality abs; Fueature: 1. easy to use; 2. easy to install; 3. making fresh air for your house; 4. abs material which environment friendly and non-toxic; 5. give a better life to you. NOTE: the HG POWER air vents have 3''/ 4''/ 5''/6''/8''. you can find any size follow you want. if you have any needs, feel free to contact us. we will reply to you in 24 hours!